Adjugate Matrix

To adjugate matrices, you can use the m2Adjugate, m3Adjugate, or mAdjugate functions. Each function supports an optional decimalPlaces parameter. If matrix can’t be adjugated, the functions return null.

2x2 matrix

import { Matrix2, m2Adjugate } from 'mz-math';

const m2x2: Matrix2 = [
  [3, 5],
  [-7, 2],
];

const adj: Matrix2 | null = m2Adjugate(m2x2);

/*
[
    [2, -5],
    [7, 3],
]
 */

3x3 matrix

import { Matrix3, m3Adjugate } from 'mz-math';

const m3x3: Matrix3 = [
  [3, 5, 1],
  [-7, 2, 5],
  [1, 2, 3],
];

const adj: Matrix3 | null = m3Adjugate(m3x3);

/*
[
    [-4, -13, 23],
    [26, 8, -22],
    [-16, -1, 41],
]
 */

4x4 matrix or above

import { Matrix, mAdjugate } from 'mz-math';

const m4x4: Matrix = [
  [1, 1, 1, -1],
  [1, 1, -1, 1],
  [1, -1, 1, 1],
  [-1, 1, 1, 1],
];

const adj: Matrix | null = mAdjugate(m4x4);

/*
[
    [-4, -4, -4, 4],
    [-4, -4, 4, -4],
    [-4, 4, -4, -4],
    [4, -4, -4, -4],
]
 */